#51998D
Closest named color: Grey Teal (#5E9B8A). oklch(63.3% 0.075 181.7), rgb(81, 153, 141).
Aa
Black text reads best on this color (6.29:1).
About this color
#51998D is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.075 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.015 away. Black text reads best on it, at 6.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.29:1 |
| White text | 3.33:1 |
Values
| HEX | #51998D |
| RGB | rgb(81, 153, 141) |
| HSL | hsl(170, 31%, 46%) |
| OKLCH | oklch(63.3% 0.075 181.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #51998D | 3.33:1 | AA large text | Lc -66.1 | Content text, not long reading |
| Black text on #51998D | 6.29:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #51998D text on white | 3.33:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #51998D text on black | 6.29:1 | AA | Lc -41.0 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A8C9C2
oklch(81% 0.037 181.1)
-
Step 400
400
#77ADA3
oklch(70.7% 0.059 181.7)
-
Step 500
500 (this color)
#51998D
oklch(63.3% 0.075 181.7)
-
Step 600
600
#308377
oklch(55.6% 0.082 182.1)
-
Step 700
700
#216F64
oklch(49.2% 0.076 181.8)
-
Step 800
800
#1E5A51
oklch(42.6% 0.063 181.5)
-
Step 900
900
#204A43
oklch(37.7% 0.049 181.2)
-
Step 950
950
#142B27
oklch(26.9% 0.03 181.4)
#51998D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #93928D | 0.079 |
| Deuteranopia (no green cones) | #87898E | 0.075 |
| Tritanopia (no blue cones) | #319B95 | 0.023 |
| Achromatopsia (no color) | #8D8D8D | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51998D
#51998D
oklch(63.3% 0.075 181.7)
- #B17786
#B17786
oklch(63.3% 0.075 2.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #51998D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.015
- Sea #3C9992 ΔE 0.017
- Dull Teal #5F9E8F ΔE 0.021
- Persian Green #2A9D8F ΔE 0.026
- Dusty Teal #4C9085 ΔE 0.027
- Cadet Blue #5F9EA0 ΔE 0.034
- Blue Green #0F9B8E ΔE 0.035
- Ocean Green #3D9973 ΔE 0.045
Use #51998D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.